Apparatus for purifying lubricating oil



July 9, 1929.v c. MCCUEN APPARATUS FOR PUIFYING LUBRICATING OIL 2sheets-sheet Filed Sept. 24, 1924 Vm* w. my 6 mc. a i.

-July 9, 1929. c; L. Mccul-:N

PPARATUS FOR PURIFYINGLUBRICATING OIL 2 Sheets-Sheet 2 Filed Sept. 24,1924 Patented July 9, 1929.

UNITED STATES PATENT OFFICE.

CHARLES L. MCCUEN, OF DETROIT, MICHIGAN, ASSIGNOR TO PERFECTIONENGINEER,-A ING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OFMICHIGAN.

APPARATUS FOB PURIFYING LUBRICATING OIL.

Application led September 24, 1924. Serial No. 739,660.

The invention relates to an apparatus for purifying lubricating oil andis particularly applicable to an apparatus for purifying thellubricating oil of an internal combustion engine. One ot the objects ofthe invention is the provision of an improved apparatus including aconduit for conducting the lubricating oil from the engine cylinderwalls. Another object is the provision of a simple device for securingthe conduit in place and at the saine time placing this conduit incommunication with the ports in the cylinder walls. A further object isthe provision ot a device which in addition to securing the conduit inplace secures in place a cover plate for the engine.

Vith these as well as other objects in View the invention resides in thenovel features of construction and combinations and arrangements ofparts as more fully hereinafter setl forth.

In the drawings: f

Figure 1 is a side elevation. partly in section, ot' a portion of aninternal combustion engine embodying an apparatus for puritying thelubricating oil;

Figure 2 is a transverse cross section therethrough 5 Figure 3 is across section on the line 3 3 of Figure 2;

Figure 4: is a cross section on the line llof Figure 1.

1 is an internal combustion engine having a series et cylinders Q ineach of which a pistonV 3 is reciprocable. Each piston` is provided withthe annular grooves't for receiv'- ing the piston rings one otl thegrooves having a tapered lower portion 6 which upon the downward strokeot' the piston registers with the port 7 in the wall of its respectivecylinder.

To conduct the lubricating oil, which has collected in the taperedgroove portion 6, I have provided the conduit 8 which is prei?- erablyformed of tubing and extends longitudinally ot the engine within thevalve tappet chamber 9. This conduit has a closed front end 10 and athreaded rear end 11 and with the exception of the rear end is flattenedthroughout its length, as shown particularly in Figure 2. For placingthe conduit S in communication with the ports 7 ot the cylinders walls,I have provided the studs 12 having inner end portions 13 extendingthrough the conduit 8 and threadedly engagiiig the cylinder Walls, eachinner end portion being provided with the longitudinally extended boreor passageway 14 and the aligned transverse bores or passageways 15,which latter register with the interior of the conduit 8. These studs 12also secure the conduit in place, each stud having the shoulder 16formed by the enlargement 17 upon the stud and located at the outer sideof the conduit. Suitable packings 18 and 19 are provided respectively atthe outer and inner sides of the conduit and surrounding the inner endportion 13 of the stud to prevent the lubricating oil from leaking outbetween tlie conduit and the inner end portion of the stud.

The rear end 11 of the conduit 8 extends outwardly through the rear endof the engine 1 and has threaded thereupon the titing 20 which isconnected Vith one end of the discharge pipe 21, `the other end of whichis connected with the vaporizing chamber 2Q.

This chamber surrounds the exhaust pipe 23 ot the engine and is formedby a portion of the wall of the exhaust pipe and a surroundlng wall Q1spaced from and preferably integral with the wall of the exhaust pipe.Both the upper and lower ends of the chainber are closed by the upperand lower walls 25 and 26 respectively7 the latter of which ispreferably integral with the wall 2l and the wall of the exhaust pipe23. The discharge pipe 21 preferably opens into the chanber at its upperend and for the purpose of directing the lubricating oil through acircuitous path within the chamber, I have provided the spirallyarranged trough or channel 27 which is coiled around the wall of theexhaust pipe. For conducting the oil .iter it has passed through thechamber 22 to the crank case of the engine, I have provided the pipe 28which is connected with the lower end of the chamber.

For removing the volatile diluents of the lubricating oil, such asgasoline, kerosene and the like, which have been vaporized during thepassage through the chamber 2Q there is the suction pipe 29 which isconnected with the upper end of the chamber Q2 and with the intakemanifold 30 of the engine.

The outer ends ,of thestuds 12 are preferably threaded for engagement bythe nuts 31 which latter secure the cover plate of the Valve tappetchamber 9 in place.

From lthe above description it will be readily seen that I have provideda simple construction of apparatus for removing the diluents of thelubricating oil. Also that I have provided a simple compact constructionwhich may be cheaply manufactured for conducting the lubricating oilfrom the cylinder walls. Furthermore it will be seen that I haveprovided a securing means for the lubricating oil conducting conduitwhich also functions to place this conduit in communication with theports in the 'cylinder Walls and which additionally functions insecuring the cover plate of the valve tappet chamber in place.

lIi/'hat I claim as my invention is:

l. The combination with a cylinder having a port in the wall thereof, ofa conduit at one side of said cylinder and a common means for securingsaid conduit to said cylinder and for placing` said conduit incommunication with the port thereof and for securing a cover on thevalve tappet chamber of said cylinder.

2. The combination with a cylinder having a port in. the wall thereof,of a conduit at one side of said cylinder, a stud extending transverselythrough said conduit having a threaded portion engaging the wall of saidcylinder and provided with a yiassageway opening into said conduit forplacing the interior ot said conduit in communication with the port ofsaid cylinder, and a shoulder pon said stud for securing said conduit tothe wall of said cylinder.

3. In an internal combustion engine, the combination with a plurality ofcylinders having ports in the walls thereof, a chamber at one side ofsaid cylinders and a ccver plate for said chamber, of a conduitextending longitudinally of the engine within said c Lamber andcoinn'innicating with the ports in the walls of said cylinders and acommpn means .tor securing said cover plate and conduit in place.

4t. In an internal combustion engine, the combination with va pluralityof cylinders having ports in the Walls theieo't, of a conduit extendinglongitudinally of the engine at one side of said cylinders, studshavingportions extending through said conduit and threadedly engaging inthe walls ot said cylinders and provided with passageways for placing'the ports of the cylinder walls in `communication with the interiorotsaid conduit, and means upon said studs for securing said conduit inplace.

5. In an internal combustion engine, the combination with a plurality ofcylinders having ports in the walls thereof, a chamber at one side otsaid cylinders and a cover plate for said chamber, of a flattenedconduit within said chamber and extending ,longitudinally of the engine,studs having portions extending through said conduit and threadedlyengaging the walls of said cylinders, said portions having passagewaysfor placing the interior of said conduit in communication with ports ofthe cylinder walls, shouldersupon'said studs for securing said conduitin place, and means threadedly engaging said studs for securing saidcover in place.

6. In an internal combustion engine, the combina-tion with a cylinderhaving a port in the wall whereof, a crank case, an intake manifold andan exhaust pipe, of a conduit in communication with said port, a chambersurrounding said exhaust pipe, a connection between the upperend of saidchamber and said conduit, a spiral trough arranged within said chamber,a pipe leading from the lower end of said chamber to said crank case,and a second pipe leading from the upper end of said chamber to saidintake manifold.

7. In any internal combustion engine a vaporizer for removing volatilediluents from the lubricating oil for the engine comprising a pipe forconducting exhaust gases of the engine from the cylinders thereof and atrough spirally formed within said vaporizer about the exhaust pipe,means for conducting lubricantto said trough, and means for conductingaway from the vaporizer the volatile diluents vaporized under theinfinence of the exhaust gases passing through the exhaust pipe.

8. The combination with a plurality of cylinders having ports in thewalls thereof and having valve operating tappets adjacent the outerwalls, of a flattened conduit extending between said tappets andcylinder walls, and means for securing said conduit in communicationwith said ports, said conduit having its major axis extendingsubstantially in the direction of the axis of the cylinders.

9. The combination with a plurality of cylinders having ports in thewalls thereof, and having valve operatine` tappets adjacent the outerwalls, of a flattened conduit extending between s'aid tappets andcylinder walls, and means for securing said conduit in communicationwith said ports through one of its broad wall portions, the inner and.outer of said broad Wall portions being positioned adjacent saidcylinder walls and tappets respectively.

In testimony whereof I atlix my signature.

' CHARLES L. MCCUEN.

